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Thread: Complimentary Upgrades on Delta, the Definitive Thread
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Old Jul 28, 2023 | 8:12 pm
  #392  
gerardfarrell
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20 Years on Site
 
Join Date: Jan 2005
Programs: Delta
Posts: 87
Originally Posted by xliioper
If you are on a KL coded, DL operated flight, C+ upgrades are only available on day of departure. DL upgrade processor cannot process upgrades as there is KL equivalent to DL SU upgrade class.
All flights are DL coded on a 006 ticket. Some report as operated by KLM or an AF partner, but it's actually the DL operated ones I'm having more problems selecting Comfort+ seats on.
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